Attackers with access to user accounts can inject arbitrary control characters to SIEVE mail-filter rules. This could be abused to access SIEVE extension that are not allowed by App Suite or to inject rules which would break per-user filter processing, requiring manual cleanup of such rules. We have added sanitization to all mail-filter APIs to avoid forwardning control characters to subsystems. No publicly available exploits are known.
Published 2023-08-02 13:15:10
Updated 2024-01-12 08:15:40
Source Open-Xchange
View at NVD,   CVE.org

Exploit prediction scoring system (EPSS) score for CVE-2023-26430

0.07%
Probability of exploitation activity in the next 30 days EPSS Score History
~ 31 %
Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2023-26430

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source First Seen
4.3
MEDIUM CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
2.8
1.4
NIST
3.5
LOW CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:N/I:L/A:N
1.8
1.4
Open-Xchange

CWE ids for CVE-2023-26430

Products affected by CVE-2023-26430

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